To be sure where you have a problem, I would recommend you to measure the time on the both sides. For example in your JavaScript do following.
It could be taking a long time to serialise and deserialise. Have you considered returning a PartialView instead and replacing the contents of a div with the returned html?
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.